1 files changed, 0 insertions, 447 deletions

diff --git a/arch/sparc64/kernel/pci_msi.c b/arch/sparc64/kernel/pci_msi.c
deleted file mode 100644
index 2e680f3..0000000
--- a/arch/sparc64/kernel/pci_msi.c
+++ /dev/null
@@ -1,447 +0,0 @@
-/* pci_msi.c: Sparc64 MSI support common layer.
- *
- * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
- */
-#include <linux/kernel.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-
-#include "pci_impl.h"
-
-static irqreturn_t sparc64_msiq_interrupt(int irq, void *cookie)
-{
-	struct sparc64_msiq_cookie *msiq_cookie = cookie;
-	struct pci_pbm_info *pbm = msiq_cookie->pbm;
-	unsigned long msiqid = msiq_cookie->msiqid;
-	const struct sparc64_msiq_ops *ops;
-	unsigned long orig_head, head;
-	int err;
-
-	ops = pbm->msi_ops;
-
-	err = ops->get_head(pbm, msiqid, &head);
-	if (unlikely(err < 0))
-		goto err_get_head;
-
-	orig_head = head;
-	for (;;) {
-		unsigned long msi;
-
-		err = ops->dequeue_msi(pbm, msiqid, &head, &msi);
-		if (likely(err > 0)) {
-			struct irq_desc *desc;
-			unsigned int virt_irq;
-
-			virt_irq = pbm->msi_irq_table[msi - pbm->msi_first];
-			desc = irq_desc + virt_irq;
-
-			desc->handle_irq(virt_irq, desc);
-		}
-
-		if (unlikely(err < 0))
-			goto err_dequeue;
-
-		if (err == 0)
-			break;
-	}
-	if (likely(head != orig_head)) {
-		err = ops->set_head(pbm, msiqid, head);
-		if (unlikely(err < 0))
-			goto err_set_head;
-	}
-	return IRQ_HANDLED;
-
-err_get_head:
-	printk(KERN_EMERG "MSI: Get head on msiqid[%lu] gives error %d\n",
-	       msiqid, err);
-	goto err_out;
-
-err_dequeue:
-	printk(KERN_EMERG "MSI: Dequeue head[%lu] from msiqid[%lu] "
-	       "gives error %d\n",
-	       head, msiqid, err);
-	goto err_out;
-
-err_set_head:
-	printk(KERN_EMERG "MSI: Set head[%lu] on msiqid[%lu] "
-	       "gives error %d\n",
-	       head, msiqid, err);
-	goto err_out;
-
-err_out:
-	return IRQ_NONE;
-}
-
-static u32 pick_msiq(struct pci_pbm_info *pbm)
-{
-	static DEFINE_SPINLOCK(rotor_lock);
-	unsigned long flags;
-	u32 ret, rotor;
-
-	spin_lock_irqsave(&rotor_lock, flags);
-
-	rotor = pbm->msiq_rotor;
-	ret = pbm->msiq_first + rotor;
-
-	if (++rotor >= pbm->msiq_num)
-		rotor = 0;
-	pbm->msiq_rotor = rotor;
-
-	spin_unlock_irqrestore(&rotor_lock, flags);
-
-	return ret;
-}
-
-
-static int alloc_msi(struct pci_pbm_info *pbm)
-{
-	int i;
-
-	for (i = 0; i < pbm->msi_num; i++) {
-		if (!test_and_set_bit(i, pbm->msi_bitmap))
-			return i + pbm->msi_first;
-	}
-
-	return -ENOENT;
-}
-
-static void free_msi(struct pci_pbm_info *pbm, int msi_num)
-{
-	msi_num -= pbm->msi_first;
-	clear_bit(msi_num, pbm->msi_bitmap);
-}
-
-static struct irq_chip msi_irq = {
-	.typename	= "PCI-MSI",
-	.mask		= mask_msi_irq,
-	.unmask		= unmask_msi_irq,
-	.enable		= unmask_msi_irq,
-	.disable	= mask_msi_irq,
-	/* XXX affinity XXX */
-};
-
-static int sparc64_setup_msi_irq(unsigned int *virt_irq_p,
-				 struct pci_dev *pdev,
-				 struct msi_desc *entry)
-{
-	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
-	const struct sparc64_msiq_ops *ops = pbm->msi_ops;
-	struct msi_msg msg;
-	int msi, err;
-	u32 msiqid;
-
-	*virt_irq_p = virt_irq_alloc(0, 0);
-	err = -ENOMEM;
-	if (!*virt_irq_p)
-		goto out_err;
-
-	set_irq_chip_and_handler_name(*virt_irq_p, &msi_irq,
-				      handle_simple_irq, "MSI");
-
-	err = alloc_msi(pbm);
-	if (unlikely(err < 0))
-		goto out_virt_irq_free;
-
-	msi = err;
-
-	msiqid = pick_msiq(pbm);
-
-	err = ops->msi_setup(pbm, msiqid, msi,
-			     (entry->msi_attrib.is_64 ? 1 : 0));
-	if (err)
-		goto out_msi_free;
-
-	pbm->msi_irq_table[msi - pbm->msi_first] = *virt_irq_p;
-
-	if (entry->msi_attrib.is_64) {
-		msg.address_hi = pbm->msi64_start >> 32;
-		msg.address_lo = pbm->msi64_start & 0xffffffff;
-	} else {
-		msg.address_hi = 0;
-		msg.address_lo = pbm->msi32_start;
-	}
-	msg.data = msi;
-
-	set_irq_msi(*virt_irq_p, entry);
-	write_msi_msg(*virt_irq_p, &msg);
-
-	return 0;
-
-out_msi_free:
-	free_msi(pbm, msi);
-
-out_virt_irq_free:
-	set_irq_chip(*virt_irq_p, NULL);
-	virt_irq_free(*virt_irq_p);
-	*virt_irq_p = 0;
-
-out_err:
-	return err;
-}
-
-static void sparc64_teardown_msi_irq(unsigned int virt_irq,
-				     struct pci_dev *pdev)
-{
-	struct pci_pbm_info *pbm = pdev->dev.archdata.host_controller;
-	const struct sparc64_msiq_ops *ops = pbm->msi_ops;
-	unsigned int msi_num;
-	int i, err;
-
-	for (i = 0; i < pbm->msi_num; i++) {
-		if (pbm->msi_irq_table[i] == virt_irq)
-			break;
-	}
-	if (i >= pbm->msi_num) {
-		printk(KERN_ERR "%s: teardown: No MSI for irq %u\n",
-		       pbm->name, virt_irq);
-		return;
-	}
-
-	msi_num = pbm->msi_first + i;
-	pbm->msi_irq_table[i] = ~0U;
-
-	err = ops->msi_teardown(pbm, msi_num);
-	if (err) {
-		printk(KERN_ERR "%s: teardown: ops->teardown() on MSI %u, "
-		       "irq %u, gives error %d\n",
-		       pbm->name, msi_num, virt_irq, err);
-		return;
-	}
-
-	free_msi(pbm, msi_num);
-
-	set_irq_chip(virt_irq, NULL);
-	virt_irq_free(virt_irq);
-}
-
-static int msi_bitmap_alloc(struct pci_pbm_info *pbm)
-{
-	unsigned long size, bits_per_ulong;
-
-	bits_per_ulong = sizeof(unsigned long) * 8;
-	size = (pbm->msi_num + (bits_per_ulong - 1)) & ~(bits_per_ulong - 1);
-	size /= 8;
-	BUG_ON(size % sizeof(unsigned long));
-
-	pbm->msi_bitmap = kzalloc(size, GFP_KERNEL);
-	if (!pbm->msi_bitmap)
-		return -ENOMEM;
-
-	return 0;
-}
-
-static void msi_bitmap_free(struct pci_pbm_info *pbm)
-{
-	kfree(pbm->msi_bitmap);
-	pbm->msi_bitmap = NULL;
-}
-
-static int msi_table_alloc(struct pci_pbm_info *pbm)
-{
-	int size, i;
-
-	size = pbm->msiq_num * sizeof(struct sparc64_msiq_cookie);
-	pbm->msiq_irq_cookies = kzalloc(size, GFP_KERNEL);
-	if (!pbm->msiq_irq_cookies)
-		return -ENOMEM;
-
-	for (i = 0; i < pbm->msiq_num; i++) {
-		struct sparc64_msiq_cookie *p;
-
-		p = &pbm->msiq_irq_cookies[i];
-		p->pbm = pbm;
-		p->msiqid = pbm->msiq_first + i;
-	}
-
-	size = pbm->msi_num * sizeof(unsigned int);
-	pbm->msi_irq_table = kzalloc(size, GFP_KERNEL);
-	if (!pbm->msi_irq_table) {
-		kfree(pbm->msiq_irq_cookies);
-		pbm->msiq_irq_cookies = NULL;
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void msi_table_free(struct pci_pbm_info *pbm)
-{
-	kfree(pbm->msiq_irq_cookies);
-	pbm->msiq_irq_cookies = NULL;
-
-	kfree(pbm->msi_irq_table);
-	pbm->msi_irq_table = NULL;
-}
-
-static int bringup_one_msi_queue(struct pci_pbm_info *pbm,
-				 const struct sparc64_msiq_ops *ops,
-				 unsigned long msiqid,
-				 unsigned long devino)
-{
-	int irq = ops->msiq_build_irq(pbm, msiqid, devino);
-	int err, nid;
-
-	if (irq < 0)
-		return irq;
-
-	nid = pbm->numa_node;
-	if (nid != -1) {
-		cpumask_t numa_mask = node_to_cpumask(nid);
-
-		irq_set_affinity(irq, numa_mask);
-	}
-	err = request_irq(irq, sparc64_msiq_interrupt, 0,
-			  "MSIQ",
-			  &pbm->msiq_irq_cookies[msiqid - pbm->msiq_first]);
-	if (err)
-		return err;
-
-	return 0;
-}
-
-static int sparc64_bringup_msi_queues(struct pci_pbm_info *pbm,
-				      const struct sparc64_msiq_ops *ops)
-{
-	int i;
-
-	for (i = 0; i < pbm->msiq_num; i++) {
-		unsigned long msiqid = i + pbm->msiq_first;
-		unsigned long devino = i + pbm->msiq_first_devino;
-		int err;
-
-		err = bringup_one_msi_queue(pbm, ops, msiqid, devino);
-		if (err)
-			return err;
-	}
-
-	return 0;
-}
-
-void sparc64_pbm_msi_init(struct pci_pbm_info *pbm,
-			  const struct sparc64_msiq_ops *ops)
-{
-	const u32 *val;
-	int len;
-
-	val = of_get_property(pbm->op->node, "#msi-eqs", &len);
-	if (!val || len != 4)
-		goto no_msi;
-	pbm->msiq_num = *val;
-	if (pbm->msiq_num) {
-		const struct msiq_prop {
-			u32 first_msiq;
-			u32 num_msiq;
-			u32 first_devino;
-		} *mqp;
-		const struct msi_range_prop {
-			u32 first_msi;
-			u32 num_msi;
-		} *mrng;
-		const struct addr_range_prop {
-			u32 msi32_high;
-			u32 msi32_low;
-			u32 msi32_len;
-			u32 msi64_high;
-			u32 msi64_low;
-			u32 msi64_len;
-		} *arng;
-
-		val = of_get_property(pbm->op->node, "msi-eq-size", &len);
-		if (!val || len != 4)
-			goto no_msi;
-
-		pbm->msiq_ent_count = *val;
-
-		mqp = of_get_property(pbm->op->node,
-				      "msi-eq-to-devino", &len);
-		if (!mqp)
-			mqp = of_get_property(pbm->op->node,
-					      "msi-eq-devino", &len);
-		if (!mqp || len != sizeof(struct msiq_prop))
-			goto no_msi;
-
-		pbm->msiq_first = mqp->first_msiq;
-		pbm->msiq_first_devino = mqp->first_devino;
-
-		val = of_get_property(pbm->op->node, "#msi", &len);
-		if (!val || len != 4)
-			goto no_msi;
-		pbm->msi_num = *val;
-
-		mrng = of_get_property(pbm->op->node, "msi-ranges", &len);
-		if (!mrng || len != sizeof(struct msi_range_prop))
-			goto no_msi;
-		pbm->msi_first = mrng->first_msi;
-
-		val = of_get_property(pbm->op->node, "msi-data-mask", &len);
-		if (!val || len != 4)
-			goto no_msi;
-		pbm->msi_data_mask = *val;
-
-		val = of_get_property(pbm->op->node, "msix-data-width", &len);
-		if (!val || len != 4)
-			goto no_msi;
-		pbm->msix_data_width = *val;
-
-		arng = of_get_property(pbm->op->node, "msi-address-ranges",
-				       &len);
-		if (!arng || len != sizeof(struct addr_range_prop))
-			goto no_msi;
-		pbm->msi32_start = ((u64)arng->msi32_high << 32) |
-			(u64) arng->msi32_low;
-		pbm->msi64_start = ((u64)arng->msi64_high << 32) |
-			(u64) arng->msi64_low;
-		pbm->msi32_len = arng->msi32_len;
-		pbm->msi64_len = arng->msi64_len;
-
-		if (msi_bitmap_alloc(pbm))
-			goto no_msi;
-
-		if (msi_table_alloc(pbm)) {
-			msi_bitmap_free(pbm);
-			goto no_msi;
-		}
-
-		if (ops->msiq_alloc(pbm)) {
-			msi_table_free(pbm);
-			msi_bitmap_free(pbm);
-			goto no_msi;
-		}
-
-		if (sparc64_bringup_msi_queues(pbm, ops)) {
-			ops->msiq_free(pbm);
-			msi_table_free(pbm);
-			msi_bitmap_free(pbm);
-			goto no_msi;
-		}
-
-		printk(KERN_INFO "%s: MSI Queue first[%u] num[%u] count[%u] "
-		       "devino[0x%x]\n",
-		       pbm->name,
-		       pbm->msiq_first, pbm->msiq_num,
-		       pbm->msiq_ent_count,
-		       pbm->msiq_first_devino);
-		printk(KERN_INFO "%s: MSI first[%u] num[%u] mask[0x%x] "
-		       "width[%u]\n",
-		       pbm->name,
-		       pbm->msi_first, pbm->msi_num, pbm->msi_data_mask,
-		       pbm->msix_data_width);
-		printk(KERN_INFO "%s: MSI addr32[0x%lx:0x%x] "
-		       "addr64[0x%lx:0x%x]\n",
-		       pbm->name,
-		       pbm->msi32_start, pbm->msi32_len,
-		       pbm->msi64_start, pbm->msi64_len);
-		printk(KERN_INFO "%s: MSI queues at RA [%016lx]\n",
-		       pbm->name,
-		       __pa(pbm->msi_queues));
-
-		pbm->msi_ops = ops;
-		pbm->setup_msi_irq = sparc64_setup_msi_irq;
-		pbm->teardown_msi_irq = sparc64_teardown_msi_irq;
-	}
-	return;
-
-no_msi:
-	pbm->msiq_num = 0;
-	printk(KERN_INFO "%s: No MSI support.\n", pbm->name);
-}